Climatological Report (Daily)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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970
CDUS41 KLWX 200624
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
224 AM EDT SUN JUL 20 2025
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 19 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 90 1:53 PM 98 1977 88 2 86
2020
MINIMUM 72 2:28 AM 53 1976 67 5 69
AVERAGE 81 78 3 78
PRECIPITATION (IN)
YESTERDAY T 1.52 1968 0.13 -0.13 0.00
MONTH TO DATE 1.80 2.60 -0.80 2.10
SINCE JUN 1 8.73 6.90 1.83 2.79
SINCE JAN 1 22.65 24.14 -1.49 20.09
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE JUN 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 15 13 2 0
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY 16 12 4 13
MONTH TO DATE 284 226 58 329
SINCE JUN 1 605 464 141 683
SINCE JAN 1 723 570 153 866
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 2.9
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 4:00 AM
LOWEST 57 2:00 PM
AVERAGE 79
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 101 1980
MINIMUM TEMPERATURE (F) 67 55 1974
SUNRISE AND SUNSET
JULY 20 2025..........SUNRISE 6:01 AM EDT SUNSET 8:31 PM EDT
JULY 21 2025..........SUNRISE 6:02 AM EDT SUNSET 8:30 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$